Pulling-over machine



Nov. 3, 1925. 1 1559,68!

- M. T. DENNE rumme ovsn uAcHINa l'iled Feb. 21, 1921 5 Sheets-Shot 1 92 V F|G.l. 99

M K T Den ne Anya.

Nov. 3, 1925.

; M. T. DENNE vPULLING OVER MACHINE 5 Sheets-Sheo't 3 Filed Feb. 21, 1921 Nov. 3, 1925. 1,559,68l

V M. T. DENNE PULLIHG oven mcflmz med Feb. 21, 1921' s sh'eets-shm 4 /lmw// MarK T Denne bywmww Anys.

Patented Nov. 3, 1925.

UNITED sTATEs isaafisi PATENT oFF-iice.

MARK THOMAS DENNE, or Htc-incline, Lonnoiv, ENGLAND.

ifiULLrnG-ovnn MACHINE.

Application filied February 21, 1921. Serial No, 446,773. l

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH '3, 1921, 41 STAT. L., 1313.)

T 0 all 'whom it 'may concern:

Be it known that I, MARK TrioMAs` DENNE, a subject of theI King of Great Britain, residing at Highgate, London, N. 6, England, have invented new and useful linprovements iii Pulling-Over Machines, of which the following is a specification.

. This inveiition has reference to improvements in pulling-over machines which are employed in the manufacture of boots and shoes. I

So far as aifects the scope of my invention, it inay be said that there are two types of power pulling-over macliines, one in which the stretching of the lupper is effected manually, and the other in which the stretching is effected by power. V i The first of these is employed for highclass work because, as is well known, practically no two uppers, even though to out- Ward appearanceexactly similar, require the same degree of tensio-n to take the stretch out of tliein, so that every upper requires or should receive individual attention, by an experienced Operator, if best results are to be obtained.

' in the other type the stretching is eifected by power, the force of which must bel determined before starting the machine,I and in which the Operator, having adjusted the upper, starts the machine which etfects the sti'etching. i

lii both the aforesaid types of machines the laying of the upper under the last (i. e.

on to the insole oii the bottom of the last), the operation of the tack supply mechanism, the tacking and the eventual return of the operating parts to their normal position, are efected by power.

VVhen the Operator has to do the stretching-and assuming he has to deal with a considerable amount of workfthe physical strain-even when comparatvely light uppersare being dealt with-is such that, after a time, the speed of output becomes less and less, and often the quality of the work also suffers. l/Vhen the stretching isr done by power, every upper' of any particular series is subjectedr to the same strain (according to the adjustment made prior rto starting the machine) and consequently some uppers will be understretched, whilst others, at times, are stretclied or strained too much, sothat, although the :speed 'of output is higher and may be maintaned practcally constant for a quite long period of time,this method is only suitable for the cheaper ;grades of goods. i

My invention is intended to obviate the defects of both types of machines whilst re- 'taining their respective advantage to a high degree, that is to say, when lusing apullingover machine provided with '4 my'invention the Operator is enabled to dobest quality work at practically'thesaine speedl as is possible With the use of machines in which the stretching (as well as the other operations incidental to the complete pulling-over operation) is effected by power, and further,

he will practically not be subjected to any greater physical strain than when using said latter type of machine. f To this end an important feature of my invention consists in a power pulling-over machine in which the stretching of the upper as well as the subsequent operations of nailing etc. are effected by power, but with this essential proviso that so far as the stretching of the upper isV concernedgthe power actually applied'is determined) by and is at all times under thecomplete control of the Operator during the whole time'that' the stretching is being efiected or proceeding, so that he may subject one upper to a greater or to a less strain than the upper immediately before dealt with, and he inay cause the stretching force to be applied gradually or otherwise, and he inay humoifl the upper; in fact he can deal with the upper precisely in the same way in whichhe is accustomed to do When using machines in which he manf ually effects the stretching, with the difference that, when using a inachine constructed according to my invention, he is not subject to the physical strain involved in stretching the upper but need merely operate an ordinary treadle lever (or equivalent) having the usual adjustable spring resistance.

A preferred constructional form of my invention comprises the-addition to a pulli'ngover' machine having-the usual driven shaft and cam cylinder,f`of an auXiliary power driven shaft-which, preferably isV in 'constant rotation whilst the machine is in usefand to which the Operator can couple or connect-mechanism`loy the operation offwhich relative movement is,impfafrtedl to the'last and the pincers to stretch rthe upper, the couplng or (;Ollnecng means and. the means to actuate these being of such a character that the Operator has them under such complete control that he may cause from time to time any desired degree or force of tension to be put on the upper, and all this without exerting himself more than is necessary to operate an ordinary treadle lever when no stretching` of the upper by such operation is being efiected.

As it is of advantage that the Operator may he able to effect adjustments before he has put the final tension on the upper, my invention also contemplates the provision of means, in combination with the aforesaid auxiliary power driven means under the control of the Operator, whereby the' parts will be automatically looked in any position after tension has been put On the upper; after which the Operator may either increase the tension or may relax it, the looking means being adapted to be thrown out. of action by the Operator so that he may subject the upper to repeated stretcl1ing-humoring it is called-whereby to take the stretch out of the leather in successive steps or Stages.

As in some classes of work, e. g. boots and shoes having uppers of a material such as plush, canvas or the like, which, as compared with leather, does not stretch, successive uppers (of a series) must be subjected to practically exactly the same 'degree or force o-f tension, my invention further contemplates the provision of means whereby the Operator v(having determined upon the proper degree of tension) can predetermine a, for the time being, maximum tension to which the upper can be subjected by the aforesaid auxiliary power driven means` so that it will not be necessary for the Operator when lasting such boots and shoes, to exercise his judgment, he merely subjecting the successive uppers to theV said predetermined maximum tension.

It happens at times, after the upper has been gripped and to some extent stretched that the Operator desires to relax temporarily the grip of` the pincers to some extent. For example if the Operator finds that he has inserted too much Vof the edge portion of the upper in the pincers he desires to be able to release some of this, and my invention also provides means whereby this may be accomplished.

To this end my invention consists in the combination with the aforesaid auxiliary power driven mechanism means whereby the Operator from time to time may cause any desired'tension to be put on the upper, of a pincercontrol mechanism whereby the Operator may bring about any desired temporary relaxation of the' firm grip of the pincers onthe upper so as to allow the upper 'to slip or-move out of the pincers to the desired extent and whereby he may then instantly re-establish the firm grip, the said Lasaeei means being of such a construction that the Operator may bring about a complete re-' leasing of the upper should this be necessary, the parts then returning to their initial or starting position to enable the Operator to start de novo.

it also happens at times after slight tension has been put on the upper, that the Operator finds it desirable to move the pincers nearer to or away from the last and to lock them in the adjusted position, and my invention therefore also comprises means whereby this can be eifected and which may be operated whilst the tension on the upper is maintained.

My invention is illustrated in the accompanying drawings in which Fig. 1 is a side elevation of a complete pulling-over machine in which mechanisms are included which do not form a part of the present application and are not therefore described in detail.

F ig. 2 illustrates in side elevation the upper portion Of One pair of pincers, of which, as is usual, there will be three in the machine viz. one at the toe and one on each side of the fore-part; the pincers being in closed position.

Fig. 2EL illustrates a side elevation, the lower portion of one pair of pincers; the position of the parts being that assumed when the pincers are in open position.

Fig. 3 illustrates a constructional form of means whereby the Operator can cause relative move-ment to be imparted to pincers and the last support.

Fig. 4 is a Fig. 5 shows in side elevation the means whereby the pincers may be adjusted to suit different sizes of lasts.

Figs. 6 and-7 are a plan and edge view respectively of a partof the means illustrated in Fig. 5

Fig. 8 is a plan view of the spring cushioning device whereby the pincers will be operated by a yielding pressure to lay the edge of the upper under the last, and

Fig. 9 is a half section on line A, B, Fig. 8 viewed from. left to right.

Owing to the fact that in Fig. 1 it is not possible to illustrate the various mechanisms fully, I propose to refer mainly to the detail Vdrawings in the. first instance as by this means a complete understanding of my invention may be had, reference to Fig. 1 being from time to time made so that the IUQ plan view of a part of Fig. 3,

relative location of the interdependent parts 150 (Figs. 1 and 8) and which slide supports the weight of the bar and its mechanism.

The upper end of the main pincers bar has attached to it a block 7 that carries the fixed jaw 5 this latter being secured -in position by the set screw 6. On an extensionfrom the block 7 is a. pivot 8 that carries the movable jaw 9, a spring 10 acting to maintain the ja-w 9 against the fixed jaw 5. The shank of the jaw 9 extends downwardly at 11 and has a tail piece 12 which, as will be described serves as an inclined plane. At 13, the main pincers bar carries a rockingbar 111 one end of which is provided with an antifriction roll 15 and the other end of which is bifurcated to engage a pin 16 on the upper end of a vertical rod 17,'the arrangement beingsuch that if the rod 17 is raised-as it is shownat its upper end and which is normally effected by a spring i18-- the cam roll 15 will travel along the inclined plane 12 and close the Vjaw 9, whereas on the reverse movement of the rod 17 the'jaw 9 will be released, allowing the spring 1 to open it.

The jaws are-normally open, and means are provided whereby the Operator on 'depressing a treadle to a very limited extent, the spring 18 willv be set free to close the jaws on to the. previously inserted edge of the upper. Should it then be necessary to adjust the upper the Operator can cause the pincers to relax their grip to a sufficient extent by his merely depressing the treadle to a further (still not to its full) extent. Should it however be necessary to open the jaws completely, the Operator can effectthis by depressing the treadle to the full extent, when the parts will have 'been returned to their normal positions and having released the treadle, the Operator can start de novo.

I now propose to describe the means whereby these movements of the pincers jaws canbe brought aboutbut must first point. out that` whilst the jaws are shown closed-the mechanism now to be'rdescribed is in the position they occupy when the aws are open, therod 17 being for this purpose shown broken. Y i

On the bottom end of the rod 17 is a block 19 secured in position by a set screw 20. The said block has twolugs 21 and 22. The lug 21 is adaptedjto be engaged by a hook 211 which is pivotally mounted at 23 onthe pincers bar 1 a spring 25 acting on atail extending down from the shank of the hook 211 acting to maintain normally the said engagement. When the parts Vare so en-` gagedf the rod 17 will be in its lowermost position and consequently the pincers will be open.

The main pincers bar is formed with a bearing on which a Vertical rod 26 is'adapted to slide, the said rod having connected to it one end of a spring 27 the 'other -erating levers-similar to 71 are connected to their appropriate treadle 76.

The rod 26V is providedl with a lug 29 Vthat projects so as to beengaged against the lug 22 on the block 19 when relative movement is imparted in one direction to the parts 26 and 19, and also with aV spring pawlV 30 the spring 31 offwhich acts normally -to maintain thempawl projecting'beyond the side face of the rod 26 and'which p-awl, when the machine is in its normal or starting position, engagesagainst a hump 32 on an extension of the shank of the catch 24.

The block 19 has connected'to it a link 33 the lower end'of which (see-Fig. 1) is connected to one end of a rocking lever; 79, mounted on a pivot 80, the opposite end of which is engaged by a plate 81 on a stem that is moved by the rocking of a bell-crank lever 83,84 mounted at 85 and :having a cam-roll that engages a` suitably formed cam groove (notshown) in a, cam cylinder 87. The cam cylinder is carried on a cam shaft 88 -which receives rotary `movement from the usuall belt pulley 300 throughr the intermediary of any suitable gearing 301.

At one end theV cam shaft 88 is provided i with a crank disk '89`the crank pin 90 oln which engages a block on the end of a rod 91 through vwhich in the well known manner the nail supplyng apparatus 92 is operated to supply tacks down the usual raceways 93 and after thetacks are reversed they pass head -firsti-down flexible tubes 911 to the nosepiece 63 (Fig. 2) of the pincersffrom which they pass through the orifice 62 to the'nail driving aperture 117. I f

When the hook 24; engages the lug 21 on the block 19, the rod 17 will be' drawn down-against i'the action ofv the spring 18-,to its lowermost position and consequently the rocking lever 111 will be in the position in-which the roller 15 is raised and consequently the spring 10 will be free to act and open the jaw 9. This is the position of the parts 'when the machine is in its nor-mal or starting position. As is well understood there are three pairs of pincer'sin pullingover machines'. -As they are similar 'ini'constructionV itfwill suifice to describeV the toe pincers illustrated in Figsl and VWhen 'the Operator has placed the -e'dge'of through the mechanism coinprising the link 73 lever 71 and ch-ain 28 will pull down the rod 26 to a slight extent, whereupon the pawl 30, by depressing the hump 32 will cause the hook 24 to be disengaged from the lug 21, releasing thereby the rod 17, when the spring 18 will instantly act to swing the rocking lever 14 to the position shown in Fig. 2 and thereby firmly close the jaws to grip the upper. The Operator will then depress the appropriate treadle 77 which, through similar mechanism to that just described, will bring about the closing of both the side pincers to grip the upper on each side of the forepart.

Thereafter the' Operator brings about the relative Jmovement of the last support 'and the pincers in the direction to stretchl the upper.

This, in accordance with my invention is efiiected by powerunder the control of the Operator and in Figs. 1, 3 and 4 a constructional form of my inventionis shown in which the last support is moved relatively to the pincers.

In Fig. 3 the numeral 190 is intended to indicate the complete pincers just described in detail with reference to Fig. 2. The last support comprises a bar 101 which is slidable in a guide 113 and has a pivot 102 on which the toe rest 103 is mounted, a spring 104 serving to maintain said rest in its raised position. 105 is the forepart rest that is adjustably fixed by a setscrew 106 to a standard 107 that is in turn mounted on a spindle 108 in a bearing of a carriage 110 that is slidable on the bar 101. The standard 107 can be set up or down by turning a handle 111 which rotates the spindle 108 and causes a toothed pinion thereon to ride up or down on a rack on the bar 101, suitable meansf-for example a set screw 112-being provided to lock the parts in their adjusted position.

The lower endof the bar 101 is connected by a link 114 to a cross-pin 115 On One end of a rocking frame 116 which rocks on trunnion pins 117.

Supported in bearings at a suitable part of the machine is a shaft 136 which has a belt pulley 137 that is constantly driven, and which shaft carres the parts 117 and 116 referred to, as well as friction discs 132,

133, the latter of which is slidable and is controlled by a treadle lever 138 pivotally mounted On a shaft 140 and normally held raised at itsfront end by a spring 139. rPhe friction discs are normally held apart in the usual manner by a spring (not shown) and the lever 138 has an extension which carries on opposite sides of the bearing supporting the shaft 136, pins such as 141 which engage slide pieces 142, the arrangement being such that if the treadle rod 138 be depressed the friction discs will be en- 1,55e,es1

gaged. The friction disc 132 is provided with a bevel wheel 134 with which an arc shaped rack 135 gears, the said rack being carried by the rocking frame 116 (see Figs. 3 and 4) so that when the friction discs are made to engage; the disc 132 Will rotatc the gear 134 and this will cause the frame 116 to be rocked thereby raising the rod 114, bar 101 and the last supports 103 and 105 and, as at this time the edge of the upper will haveV been gripped in the pincers, the upper will be subjected to tension, the amount or degree of which will be dependent upon the force with which the frictiondiscs are made to engage with each other. The Operator can then put any degree of'tension on the upper.

As already premised when plush, canvas or similar comparatively non-stretchable uppers are used, all of which (of a series of uppers) will require tobe subjected to practically exactly the same degree of tension I provide means whereby I may limit the amount of tension which can be put on or in other words I provide means whereby the Operator may predetermine a, for the time being, maximum tension (this being the tension suited to the upper material in use) which can be applied. Merely by way of example 1 may apply means whereby the downward movement of which the treadle 138 is capable may be limited more or less as may be necessary and I have illustrated purely diagrammatically a simpler means whereby this may be effected. The said means comprise a hook 250 (Fig. 3) that is adapted to engage thel under edge of the treadle bar 138 and which may be set up or down by a nut 251 which rests On a 'fixed fiange 252 of a suitably supported bracket 254 and which is engaged with the screwth'readed end 253 of the hook 250. Thus by turning the nut in one or other direction the distance Or depth to which the treadle rod can be depressed may beV limited to any desired extent and thereby the maximum degree of frictional engagement of the friction disc will likewise be limited. Having made the aforementioned adjustments of the nut 251, so that the proper tension is applied to the first upper 'of a number, the operator need only depress the treadleto the, for the time being, full extent when lasting successive plush, canvas or like uppers,'and they will all be subjected to the proper ten-- sion' without the Operator having to exercise his judgment.

Means will be provided (which will be described later on, when the tensioning of a leather upper is being dealt with) whereby the last support is looked when the 'desired full tension has been applied to the upper.

After this the Operator will, in the usual manner, start the machine whereby the `laying Of the edge of the upper under the edge of the last, the subsequent tacking, the final releasing of the work, and the return of all the parts' to their normal positions will alll be automatically effected, but as the means whereby these automatic operations arejeffected form 'no part of the present application, they are not further described.

It is well known that, in order to obtain best work when leatherI uppers are being used, each upper should receive individual attention, and in that case the hook 250 will be thrown out of action so that the operator will be free to apply any desired degree of tension up to the maximum'that can, within the compass of the friction clutch, be applied.

Mounted to be slidable in the bracket 118, carried by the frame of the machine and which bracket supportsthe guide or slide 113 hereinbefore referred to, is a pawl`120 that is adapted to be -engaged with a toothed rack 119 on the bar 101 (Fig. The pawl will be pressed on by a spring (not shown) that tends to bring about such engagement. Pivotally mounted on the bracket 118 is a finger 121 that engages with an aperture or slot in the shank of the pawl 120 and a handle 123 secured to the boss of the finger is provided whereby the fiuger can be moved to the position shown to permit the pawl to engage the rack or the finger may be moved or swung to withdraw the pawl from engagement with the rack 119 and thus free the Vbar 101. In practice it is usual: in such pawl and rack devices to provide two or even more pawls located at slightly different altitudes with respect to the rack so that a ver fine adjustment may be had without requiring the pawl to be provided with equally fine teeth and I have adopted this in my arrangement. A spring catch 122 is provided that engages in one or other of two notches in the boss of the finger 121 so as to retain this in either position to which it may have been adjusted.

With the arrangement thus far described, the Operator having gripped the upper in the pincers, he may in the first instance withdraw the pawl 120 from the rack 119.

Thereafter her may move the treadle downin successive stages-fpreferably releasing it after each depression-so as to take the stretch gradually out of the leather. This is known as humoring the uppen After this preliminary stretching (or without doing so if the Operator thinks this to be unnecessary in any particular case) the operator will release the pawl 120 and then put tension on the upper to the desired, extent sufficient to enable him to see whether the upper is in every way properly positioned. He may now release the treadle, when the pawl 120, by its engagement with the rack 119, will maintain the tension on the upper by reason of its having looked the bar 101 ;126 'the upper, en

against downward movement. The Operator is then free to move aboutto effect any desir'ed adjustments of the upper (and of the pi'ncers to and fro 'in the well known manner).\ Having seen that all is in order, he i As already mentioned, the Operator then I starts the 'machine when the'other operations inci'dental to the completion of the work will be effected automatically as is well known. i

fSo farf as the automatic disengagement` of the pawl 120 with the' rack 119 is 'con-f cerned, (which must be effected after the work is completed I provide a sliding plate said sliding plate has a slotin whichone arm 125 of a bell crank lever that is -mountfix ed on a pivot 124 engages, the other arm 127 of which has connectedto it a rod 128 the other end of 'which is connected to as of which is tapered and I adapted, when p'ushed against the tapering; end of the pawl 120,.to push this back. The

carries a cam roll that is engaged in a cam groove in the main cam disc 87.

The trunnion 2 of the pincers bar 1 is carried by a slide 150,1Figs. 1, 8- and 9,-thatis adapted to =slide in suitable guide-ways, such as 150WV Below the slide 150 is another slide 151a having racks; 151 on either'side which Vare in gear with toothed pinions` 152. A stem 170 and a stud or abutment 171 is carried by the upper slide 150, said slide having the web W which supports the stem 170. The stem170 'has mounted on it a. ro.-

'tatable sleeve 172 having a dependinglug 174 that is normally maintained in contact with the stud 171 by the action of a spring 173 one end of which is hooked on a stud 175 on the slide 151a-and the-other on a stud 176 carried by the sleeve 172 which spring tends to rotate the sleeve in the direction to maintain contact between the'stud 171 and abutment 17 4:. By this arrangement when the toothed pinion152 is rocked (by means to be described) in the 'direction to i move the pincers under the last, the movement of the bar 151% will be transmitted |through the spring 173 and will then be a yielding movement. The tension of the spring can be adjusted by any suitable means and thereafter the parts looked by a stop pin 177 that can engage against' flat faces 178 (Fig. 8) on the stem 170, or; otherwise. Movement is imparted to the toothed pinions 152 (which are carried on spindles such as 166 (Fig. 1,) by a plate or slide 153 which has'ra'c'ks such' as 165 that engage with the-pinion 152. The slide 153 (Figs. 1, 5, 6 and 7) derives reciprocating movement from a suitable cam V(not shown) in the main cam 'cylinder 87. The said slide 153 is not, however directly connected with the cam there being means intermediate said parts whereby the length of the slide 153 may be adjusted so that by this means the position of the pincers may also be adjusted to adapt them for lasts of different sizes. For this purpose the slide 153 has a slot or slideway to receive a har 154 (Figs. 5, 6 and 7) that carries the supporting spindle 155 of acam roll 156 (Figs 1- and 5) thatengages in a cam race (as already stated, not shown) in the cam cylinder 87). The har 1,54 is adjustably connected to the slide 153 by the following'V means. The slide 153 is provided with a toothed rack 157 rand the 'har 151f with a corresponding rack 159. This latter rack is formedon the end of a block that is slidahle in a fitting inl the har ltj which block is normally pressed so that its rack engages the rack 157 by Springs 158. When it is required'toV allteritlhef position of the pinCers-for larger or smaller lasts--the rack 159 isk disengaged from the rack 157 (by means to be described) and then the handle 167 (F ig. 1) Which is fixed tov the spindle 166 of the toothed pinion 152, .is moved to rotate the said pinion in the appropriate direction and to the proper extent, which will move the rack bar 151 (and with it the slide 150 and the pincers) and also the slide 1-53. vAfter this the rack 159 is againengaged with the rack 157. To effect this disengagement of the racks, I provide (see Fig. a' cam 162 on a spindle 161 which is suitably supported on a fixed part of the machine and which cam may be rotated by moving a hand lever 163 secured to the spi-ndle 161. The camv whenso moved, acts against a spindlr-z164- that has a notch cut in it in which a lng 1.60 on the block 159 isr engaged'd and by. this th'e block is pressed back-against the action of the Springs 158 and the rack 159 is disengaged froni'the rackI 157. After the required adjustments have rbeen effected. the handle 163 is moved back to its normal position when the springe 158 willcause the said rackes to be again engaged. As already stated, the said adjustment of the pincers can be effected' whilst tension is maintained on the upper.

In Fig. 2 of the drawings means are illustrated whereby the upper is held tightly against the last'to permit the pincers to release the upper in order to move a further v'distance after 'which the taclrs are driven and also means that control the tack driver, but as these form no part of 'this present application they need not be further described;

I wishit to be understood that although I have described and illustrated my invention as applied to a pulling-over machine in which the work is held sole down, I do not limit the 'scope of my in-ventionr thereto and that whenever I refer in thev claims'to the upper being laid under the last I wish it to be understood that 'this expression is intended to describe merely the movement' of the pincers whereby in the case of welted boots and shoes the edge of the upper is brought up against the lip of the insole or in the caseof machine sewn boots and shoes it is brought further over the edge of the insole and nearer to the centre of the sole of the last altogether regardless of the actual position in which the last is supported.

lVhat I claim is 1. A pulling over machine havingin combination, a last support, a plurality of pin-V cers, automatic power-actuated means for actuating said pincers to lay, the marginal portion of the upper over the edge of the sole of the last, and other power-actuated means operable throughout the operation and entirely under the control of the operator to bring about a relative movement of the last support and all the pincers simultaneously, to stretch the upper about the last.

A pulling over machine having in combination, pincers, automatic power' actuatedl means for actuating said pincers to lay the upper over the edge of the sole of the last, an auxiliary independent. power driven shaft, means for imparting relative movement to the last and the pincers, means for controlling said last mentioned means in applying tension to the upper, and means operable throughout the operation and entirely under the control of the Operator to operate the Controlling means through said independent power-driven shaft.

3. A pulling over machine having in. combination, pincers, automatically power' actuated means for actuating the pincers to lay the upper over the edge of the sole of the last, an auxiliary power driven. shaft, means under the control of the Operator to cause said auxiliary power driven shaft to impart a desired relative movement to. the last and pincers to stretch the upper to the desired extent, and means for limiting the amount of tfen'sion to which the upper can be subjected by the. auxiliary power driven Shaft.

4. A pulling over machine having in. combination, pincers, automatically power actuated means for actuating said pincers to lay the upper over the edge of the sole of the last, an auXiliary-power driven shaft, means to limit 'the degreeof tension put upon. the upper through said auxiliary power driven shaft, and means to utilize said auxiliary power driven| Shaft to gradually increase or decrease the tension on the' upper without intermediate relaxation of the 'tension 5. Ar pulling overmachine having in 'comssfr loc

bination, pincers, automatically actuated means for actuating said pincers to lay the upper over the edge of the sole of the last, an auxiliary power driven shaft, means under the control of the Operator to apply the de-y sired extent of movement to the last support relative to the pincers, a treadle, connections between the treadle and said last through said auxiliary Shaft, whereby a partial operation of the 'treadle will cause a closing of the pincers and further movement of the treadle will cause a desired relaxation of the grip of the pincers without affecting the tension means prior to the complete release of the upper.

6. A pulling over machine having in combination power actuated pincers which are normally open and which are stationary while a movable last support brings about the tensioning of the upper, a treadle, means controlling the pincers and actuated by the treadle whereby a partial depression of the treadle effects the firm closure of the pincers on the previously inserted upper, a further partial depression of the treadle brings about a partial relaxation of the firm grip of the pincers and a complete depression of the treadle brings about a complete release of the upper,l and means whereby before the complete release is brought about the operator can subject the upper to tension by coupling the work support to an auxiliary power driven shaft.

7. A pulling over machine having in combination, a last support, a plurality of pincers, automatically power actuated means for moving said pincers Vto lay the margin of the upper over the edge of the sole of the last, a separate power actuated shaft, a friction clutch to be driven by said latter Shaft, and means entirely controlled by the Operator whereby the friction clutch is made to impart relative movement to the last support and all the pincers simultaneously in the direction to stretch the upper over the last.

8. A pulling over machine having in combination, a last support, a plurality of pincers, automatically power actuated means for actuating said pincers to lay the margin of the upper over the edge of the soleV of the last, a separate power actuated Shaft, a friction clutch, means connecting one member of the friction clutch to the last support, and means entirely under the control of the Operator for frictionally coupling said member with the separate power driven shaft. V

9. A pulling over machine having in combinaton, a last support, a plurality of pincers, automatically power actuated meansfor actuating 'said pincers to lay the margin of the upper over the edge of the sole of the last, a separate power actuated shaft, a friction clutch, means connecting one member of the friction clutch to the' last support, a treadle and connections therefrom to couple the said member frictionally with the separate power driven shaft.

10. A pulling over machine having in combination a last support, pincers, a constantly-driven shaft, a friction inember rotated by said shaft, a second friction member normally'stationary, a treadle, connections therefrom to bring the friction member into engagement to rotate the second.

member, means controlled by 'the friction members tobring about relative movement of the last support and the pincers to stretch the upper, and connections between the normally stationary friction member and the lastsupport ,fwhereby on rotation of said member movement of the last support is brought about, said last-named connections comprising a toothed wheel, a rack in engagement. therewith, a rocking frame to carry the rack, and a link connecting said rocking frame with the last support.

11. A pulling over machine having in` combinat-ion, a last support, pincers, an intermittently driven shaft, a constantly driven shaft, connections between the former shaft and 'the pincers to bring about movement of the pincers in a plane substantially parallel with the plane of the soleof the last, and means actuated by the latter shaft to bring about relative movement of the last' support and the pincers in a'plane substantially at right angles with respect to the first mentioned plane.

12. A structure as specified in claim 11,4 

